Irregular spherical porous carbon, preparation method and application thereof, and silicon-carbon composite material, preparation method and application thereof
By preparing irregular spherical porous carbon, the contact area between carbon particles and binder is increased, solving the problem of easy detachment of spherical carbon particles and improving the cycle stability and mechanical strength of lithium-ion batteries.
CN121449066BActive Publication Date: 2026-06-26BEIJING IAMETAL NEW ENERGY TECH CO LTD +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING IAMETAL NEW ENERGY TECH CO LTD
- Filing Date
- 2025-11-10
- Publication Date
- 2026-06-26
AI Technical Summary
Technical Problem
The contact between spherical carbon particles is point-to-point, which can easily lead to the spherical particles detaching from the binder and reduce the cycle stability of lithium-ion batteries.
Method used
Irregularly shaped porous carbon was prepared by emulsifying and compounding it with oil-soluble and water-soluble surfactants, changing the shape of the resin under ultrasonic assistance, and combining pyrolysis and gas activation, thereby increasing the contact area between carbon particles and binder.
Benefits of technology
It improves the cycle stability and mechanical strength of lithium-ion batteries and solves the problem of capacity decay.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN121449066B_ABST
Abstract
The present application relates to the technical field of battery negative electrode material, in particular to an irregular spherical porous carbon and a preparation method and application thereof, and a silicon-carbon composite material and a preparation method and application thereof. The present application emulsifies and compiles liquid phenolic resin under the condition of oil-soluble and water-soluble compound emulsifier, and crosslinks and solidifies, meanwhile, an ultrasonic auxiliary mode is adopted, under the joint action of ultrasonic disturbance and different interfacial tension, the shape of the obtained resin is changed, the spherical resin is adjusted to irregular spherical resin, after pyrolysis and gas activation, irregular porous spherical carbon is obtained. Compared with the spherical carbon, under the premise of maintaining the strength of the spherical carbon, the irregular spherical carbon can increase the contact area between the carbon particles and the binder, the carbon particles and the binder are not easy to separate, and the cycle stability of the battery (especially the lithium ion battery) is improved.
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